rs148938083

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000440.3(PDE6A):c.784G>A(p.Ala262Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000841 in 1,614,108 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00068 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00086 ( 1 hom. )

Consequence

PDE6A
NM_000440.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:1

Conservation

PhyloP100: 7.71

Variant links:

Genes affected

PDE6A (HGNC:8785): (phosphodiesterase 6A) This gene encodes the cyclic-GMP (cGMP)-specific phosphodiesterase 6A alpha subunit, expressed in cells of the retinal rod outer segment. The phosphodiesterase 6 holoenzyme is a heterotrimer composed of an alpha, beta, and two gamma subunits. cGMP is an important regulator of rod cell membrane current, and its dynamic concentration is established by phosphodiesterase 6A cGMP hydrolysis and guanylate cyclase cGMP synthesis. The protein is a subunit of a key phototransduction enzyme and participates in processes of transmission and amplification of the visual signal. Mutations in this gene have been identified as one cause of autosomal recessive retinitis pigmentosa. [provided by RefSeq, Jul 2008]

PDE6A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2513122).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PDE6A	NM_000440.3 linkuse as main transcript	c.784G>A	p.Ala262Thr	missense_variant	4/22	ENST00000255266.10
PDE6A	NM_001410788.1 linkuse as main transcript	c.541G>A	p.Ala181Thr	missense_variant	2/20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
PDE6A	ENST00000255266.10 linkuse as main transcript	c.784G>A	p.Ala262Thr	missense_variant	4/22	1	NM_000440.3	P1
PDE6A	ENST00000508173.5 linkuse as main transcript	n.904G>A		non_coding_transcript_exon_variant	4/20	1
PDE6A	ENST00000613228.1 linkuse as main transcript	c.541G>A	p.Ala181Thr	missense_variant	2/20	5

Frequencies

GnomAD3 genomes

AF:

0.000683

AC:

104

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

Gnomad ASJ

AF:

0.00230

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00116

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000652

AC:

164

AN:

251378

Hom.:

AF XY:

0.000684

AC XY:

AN XY:

135876

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.000549

Gnomad ASJ exome

AF:

0.00139

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000261

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000994

Gnomad OTH exome

AF:

0.000815

GnomAD4 exome

AF:

0.000857

AC:

1253

AN:

1461806

Hom.:

Cov.:

AF XY:

0.000848

AC XY:

617

AN XY:

727210

show subpopulations

Gnomad4 AFR exome

AF:

0.000119

Gnomad4 AMR exome

AF:

0.000581

Gnomad4 ASJ exome

AF:

0.00103

Gnomad4 EAS exome

AF:

0.000126

Gnomad4 SAS exome

AF:

0.000174

Gnomad4 FIN exome

AF:

0.0000374

Gnomad4 NFE exome

AF:

0.00101

Gnomad4 OTH exome

AF:

0.000745

GnomAD4 genome

AF:

0.000683

AC:

104

AN:

152302

Hom.:

Cov.:

AF XY:

0.000591

AC XY:

AN XY:

74474

show subpopulations

Gnomad4 AFR

AF:

0.000168

Gnomad4 AMR

AF:

0.000457

Gnomad4 ASJ

AF:

0.00230

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.00116

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.00113

Hom.:

Bravo

AF:

0.000638

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00128

AC:

ExAC

AF:

0.000634

AC:

EpiCase

AF:

0.000981

EpiControl

AF:

0.00136

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Nov 26, 2019	In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Identified as a single heterozygous variant in individuals with retinitis pigmentosa in published literature (Anasagasti et al., 2013; Eisenberger et al., 2013); This variant is associated with the following publications: (PMID: 26901136, 24265693, 24416769) -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Dec 01, 2015	- -
Likely benign, criteria provided, single submitter	clinical testing	Invitae	Jan 22, 2024	- -

Retinitis pigmentosa 43

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Mar 11, 2022

- -

Retinal dystrophy

Uncertain:1

Uncertain significance, criteria provided, single submitter

research

Dept Of Ophthalmology, Nagoya University

Oct 01, 2023

- -

Retinitis pigmentosa

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.46

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Uncertain

-0.040

Cadd

Pathogenic

Dann

Pathogenic

1.0

DEOGEN2

Benign

0.30

T;D;T

Eigen

Pathogenic

0.84

Eigen_PC

Pathogenic

0.79

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.95

D;D;.

M_CAP

Benign

0.036

MetaRNN

Benign

0.25

T;T;T

MetaSVM

Uncertain

0.14

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.71

Sift4G

Benign

0.20

T;T;T

Polyphen

1.0

.;D;.

Vest4

0.74

MVP

0.93

MPC

0.17

ClinPred

0.28

GERP RS

5.0

Varity_R

0.30

gMVP

0.33

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over